I am trying to read xml file. and then extract some useful data to draw graphs.. I have achieved the desired output.. But the problem is my program is twice reading the xml file to extract the useful data.. This takes some extra time. Is there some other way to read the file once only. ? Thanks
<?xml version="1.0" encoding="UTF-8"?>
<CanConformanceTesterLog Version="4.1">
<TestProperties>
<Item name="IUT Name" value="Reference"/>
<Item name="PG Clock Period" value="1000 ns"/>
</TestProperties>
<SignalData SamplingPeriod="1000.000 ns" DataWidth="16 bit">
<Signal>
<Id>IUT_RX</Id>
<InitState>1</InitState>
<![CDATA[HQFPAVkBiwGVAZ8BqQHHAdEBAwINAjUCPwJxAnsCrQK3AsEC1QLzAv0CEQMbAzkDTQNrA3UDfwOJA7sDxQPtA/cDKQQzBEcEUQSDBI0EtQTJBN0E5wTxBAUFDwUZBS0FNwVBBUsFVQWHFZEVmxWlFa8VuRXDFc0V1xXhFesV9RX/FTEWOxZFFk8WgRaLFpUWnxapFscW0RbbFuUW7xYDFyEXPxdJF1MXGhgkGC4YTBhWGHQYfhiwGLoY2BjiGBQZHhkoGTIZUBlaGXgZghmgGaoZvhnbGeUZ9RwTHR0dTx1ZHYsdlR29Hccd+R0DHg0eFx5JHlMeZx6ZHsEe6R4lH5Qfsh+8H+4f+B8qIDQgXCBmIJggoiCsILYg6CDyIAYhOCFgIYghxCEzIlEiWyKNIpciySLTIvsiBSM3I0EjSyNVI4cjmyOlI9cj/yMTJB0kpyaxJrsmxSbPJgEnCyc9J0cnZSdvJ6EnqyfdJ+cnGSgjKC0oQShLKF8ocyiHKJsopSivKLkowyjWKOAo8jQkNS41YDVqNZw1pjXENc41ADYKNhQ2HjZGNlA2WjZkNm42eDaWNqo2tDbHNtE2uDd=]]>
</Signal>
<Signal>
<Id>IUT_TX</Id>
<InitState>1</InitState>
<![CDATA[SwVVBYcVkRWbFaUVrxW5FcMVzRXXFeEV6xX1Ff8VMRY7FkUWTxaBFosWlRafFqkWxxbRFtsW5RbvFgMXIRc/FxoYJBguGEwYVhh0GH4YsBi6GNgY4hgUGR4ZKBkyGVAZWhl4GYIZoBmqGb4Z6B4kH4ghxCETJB0kpyaxJrsmxSbPJgEnCyc9J0cnZSdvJ6EnqyfdJ+cnGSgjKC0oQShLKF8ocyiHKJsopSivKLkowyjyNCQ1LjVgNWo1nDWmNcQ1zjUANgo2FDYeNkY2UDZaNmQ2bjZ4NpY2qja0Nrg3]]>
</Signal>
</SignalData>
</CanConformanceTesterLog>
I have function that reads the data of tag "SignalData".then after reading this data it calls another function and pass the name of xml file,dataWidth,samplingPeriod.
The second function then reads "Signal" tag.. and then extract the data from every "Signal". Finally when everything is done then a function is called to draw the graphs...
private bool SignalDataInfo(string fileName)
{
var xdoc = XDocument.Load(fileName);
if (xdoc != null)
{
var signalData = xdoc.Descendants("SignalData");
foreach (var signal in signalData)
{
var width = signal.Attribute("DataWidth").Value;
string dataWidth = width.Substring(0, width.IndexOf(" "));
var period = signal.Attribute("SamplingPeriod").Value;
string samplingPeriod = period.Substring(0, period.IndexOf(" "));
SignalData(fileName,dataWidth, samplingPeriod);
}
return true;
}
else
return false;
}
public bool SignalData(string fileName,string width, string period)
{var xdoc = XDocument.Load(fileName);
if (xdoc != null)
{
var signalData = xdoc.Descendants("Signal");
foreach (var signal in signalData)
{ // extract data from every signal }
return true;
else false;
}
Here I create a sample console app for you to extract data from both of your SignalData and Signal.
I think you would be in search of code like below.
In below code snippet you would use result in your program where you want to read data inside xml.
So by this way you don't need to write two different methods and load your xml each time when your methods called.
class Program
{
static void Main(string[] args)
{
XDocument doc = XDocument.Load(#"Your xml document path");
var result = (from o in doc.Descendants("SignalData")
from i in o.Descendants("Signal")
select new
{
dataWidth = o.Attribute("DataWidth").Value.Substring(0, o.Attribute("DataWidth").Value.IndexOf(" ")),
period = o.Attribute("SamplingPeriod").Value.Substring(0, o.Attribute("SamplingPeriod").Value.IndexOf(" ")),
Id = i.Elements("Id").Select(item => (string)item).FirstOrDefault(),
InitState = i.Elements("InitState").Select(item => (string)item).FirstOrDefault(),
cdata = i.Value
}).ToList();
foreach (var item in result)
{
Console.WriteLine($"dataWidth: { item.dataWidth}, \t period: {item.period}, \t Id: {item.Id}, \t InitState: {item.InitState}");
}
Console.ReadLine();
}
}
Output: cdata excluded from output.
You can just load the XML file once by saving the XDocument that was loaded in a class variable (say private XDocument xDoc;) instead of creating an instance on each method. Also, it would help if you just retrieve the XML data separately, in this case, the loadData() method which you can use to initialize the data once. This will also give your code, somehow, separation of concerns. See code below:
private XDocument xDoc;
private void loadData(string fileName)
{
xDoc = XDocument.Load(fileName);
}
private bool SignalDataInfo()
{
if (xDoc != null)
{
var signalData = xDoc.Descendants("SignalData");
foreach (var signal in signalData)
{
var width = signal.Attribute("DataWidth").Value;
string dataWidth = width.Substring(0, width.IndexOf(" "));
var period = signal.Attribute("SamplingPeriod").Value;
string samplingPeriod = period.Substring(0, period.IndexOf(" "));
SignalData(fileName,dataWidth, samplingPeriod);
}
return true;
}
else
return false;
}
public bool SignalData(string width, string period)
{
if (xDoc != null)
{
var signalData = xDoc.Descendants("Signal");
foreach (var signal in signalData)
{ // extract data from every signal }
return true;
else false;
}
Hope this helps!
I am using following XML outputter for writing xml files on basis of CSV data.
public override void Output(IRow input, IUnstructuredWriter output)
{
IColumn badColumn = input.Schema.FirstOrDefault(col => col.Type != typeof(string));
if (badColumn != null)
{
throw new ArgumentException(string.Format("Column '{0}' must be of type 'string', not '{1}'", badColumn.Name, badColumn.Type.Name));
}
using (var writer = XmlWriter.Create(output.BaseStream, this.fragmentSettings))
{
writer.WriteStartElement(this.rowPath);
foreach (IColumn col in input.Schema)
{
var value = input.Get<string>(col.Name);
if (value != null)
{
// Skip null values in order to distinguish them from empty strings
writer.WriteElementString(this.columnPaths[col.Name] ?? col.Name, value);
}
}
}
}
It works really fine and jobs finishes completely without any errors however, on preview and downloading the file there is another extra character which causes in failure of that xml file being read. I have tried with fragment level and Auto as conformance levels.
My sample output obtained is
and the extra character between the 2 tags is causing problem while reading the file.
I have solved the problem by explicitly providing the encoding settings as well as closing tags with the code below
private XmlWriterSettings fragmentSettings = new XmlWriterSettings
{
ConformanceLevel = ConformanceLevel.Auto,
Encoding = Encoding.UTF8
};
public override void Output(IRow input, IUnstructuredWriter output)
{
IColumn badColumn = input.Schema.FirstOrDefault(col => col.Type != typeof(string));
if (badColumn != null)
{
throw new ArgumentException(string.Format("Column '{0}' must be of type 'string', not '{1}'", badColumn.Name, badColumn.Type.Name));
}
using (var writer = XmlWriter.Create(output.BaseStream, this.fragmentSettings))
{
writer.WriteStartElement(this.rowPath);
foreach (IColumn col in input.Schema)
{
var value = input.Get<string>(col.Name);
if (value != null)
{
// Skip null values in order to distinguish them from empty strings
writer.WriteElementString(this.columnPaths[col.Name] ?? col.Name, value);
}
}
writer.WriteEndElement(); //explicit closing tag for stream
}
}
This outputs a well formed XML which can be easily read with any xml reader.
I've been working on this problem for a few hours now and I have searched all around with no luck for a solution :(
What I am trying to do is print out names of the nodes, what i have is the amount of nodes that exist so I know how many times to loop but am having the hardest of times retrieving the values
What I have tried:
int num = Convert.ToInt32(queuecount);
var jobs = QueueXML.SelectSingleNode(xpathjobsfilename).InnerText;
PreviousQueue = jobs.ToString();
//foreach(loop < num)
//{
// if (CurrentQueue == PreviousQueue)
// {
// }
// else
// {
// resultsListView.Items.Clear();
// resultsListView.Items.Add(jobs[num]);
// }
// loop++;
//}
foreach (char JobName in jobs.ToString())
{
if (CurrentQueue == PreviousQueue)
{
}
else
{
resultsListView.Items.Clear();
resultsListView.Items.Add(jobs[num]);
}
}
Edit: Example XML
<jobs>
<job>
<timeleft>0:00:00</timeleft>
<mb>1419.60536003</mb>
<msgid></msgid>
<filename>Extended_Final</filename>
<mbleft>1274.33209419</mbleft>
<id>nzo_i7qxxq</id>
</job>
<job>
<timeleft>0:00:00</timeleft>
<mb>9.22459220886</mb>
<msgid></msgid>
<filename>Video2</filename>
<mbleft>9.22459220886</mbleft>
<id>2m3dv5</id>
</job>
</jobs>
I want to retrieve the job details for each individual jobs
Use this code to loop through your job-nodes.
XmlDocument doc = new Windows.Data.Xml.Dom.XmlDocument();
doc.Load(#"/path/to/xml/file");
foreach (XmlNode job in doc.SelectNodes("/jobs/job"))
{
string filename = job.SelectSingleNode("filename").InnerText;
double mbleft = double.Parse(job.SelectSingleNode("mbleft").InnerText);
}
I am not quite sure what you want to do with it. If you want to use that information throughout your program, I'd create a job datatype and parse the XML document to a List<Job>. In any case the above code will enable you to access the information you are after.
Use LINQ2XML
XElement doc=XElement.Load("yourXMLfile.xml");
string timeleft,mb,msgid,filename,mbleft,id;
foreach(XElement elm in doc.Descendants().Elements("job"))
{
timeleft = elm.Element("timeleft").Value; //time left value
mb = elm.Element("mb").Value; //mb value
msgid = elm.Element("msgid").Value; //msgid value
filename = elm.Element("filename").Value; //filename value
mbleft = elm.Element("mbleft").Value; //mbleft value
id = elm.Element("id").Value; //id value
}
Below is the code to add individual job details to a List of dictionary.
It eliminates selecting single node in the loop when there are lot of child nodes. And, more generic.
System.Xml.XmlDocument doc = new System.Xml.XmlDocument();
doc.LoadXml(yourXmlString);
if (doc.HasChildNodes)
{
System.Xml.XmlNodeList jobLst = doc.DocumentElement.ChildNodes;
System.Collections.Generic.Dictionary<string, string> jobDescription;
var lstjobDescription = new System.Collections.Generic.List<System.Collections.Generic.Dictionary<string, string>>();
string name;
for (int i = 0; i < jobLst.Count; i++)
{
var responseDoc = new System.Xml.XmlDocument();
responseDoc.LoadXml(jobLst[i].OuterXml);
jobDescription = new System.Collections.Generic.Dictionary<string, string>();
foreach (System.Xml.XmlNode node in responseDoc.SelectNodes("//job/*")) //select all nodes of Job
{
jobDescription.Add(node.Name, node.InnerText);
}
lstjobDescription.Add(jobDescription);
}
}
I seem to be having a problem with retrieving XML values with C#, which I know it is due to my very limited knowledge of C# and .XML.
I was given the following XML file
<PowerBuilderRunTimes>
<PowerBuilderRunTime>
<Version>12</Version>
<Files>
<File>EasySoap110.dll</File>
<File>exPat110.dll</File>
<File>pbacc110.dll</File>
</File>
</PowerBuilderRunTime>
</PowerBuilderRunTimes>
I am to process the XML file and make sure that each of the files in the exist in the folder (that's the easy part). It's the processing of the XML file that I have having a hard time with. Here is what I have done thus far:
var runtimeXml = File.ReadAllText(string.Format("{0}\\{1}", configPath, Resource.PBRuntimes));
var doc = XDocument.Parse(runtimeXml);
var topElement = doc.Element("PowerBuilderRunTimes");
var elements = topElement.Elements("PowerBuilderRunTime");
foreach (XElement section in elements)
{
//pbVersion is grabbed earlier. It is the version of PowerBuilder
if( section.Element("Version").Value.Equals(string.Format("{0}", pbVersion ) ) )
{
var files = section.Elements("Files");
var fileList = new List<string>();
foreach (XElement area in files)
{
fileList.Add(area.Element("File").Value);
}
}
}
My issue is that the String List is only ever populated with one value, "EasySoap110.dll", and everything else is ignored. Can someone please help me, as I am at a loss.
Look at this bit:
var files = section.Elements("Files");
var fileList = new List<string>();
foreach (XElement area in files)
{
fileList.Add(area.Element("File").Value);
}
You're iterating over each Files element, and then finding the first File element within it. There's only one Files element - you need to be iterating over the File elements within that.
However, there are definitely better ways of doing this. For example:
var doc = XDocument.Load(Path.Combine(configPath, Resource.PBRuntimes));
var fileList = (from runtime in doc.Root.Elements("PowerBuilderRunTime")
where (int) runtime.Element("Version") == pbVersion
from file in runtime.Element("Files").Elements("File")
select file.Value)
.ToList();
Note that if there are multiple matching PowerBuilderRunTime elements, that will create a list with all the files of all those elements. That may not be what you want. For example, you might want:
var doc = XDocument.Load(Path.Combine(configPath, Resource.PBRuntimes));
var runtime = doc.Root
.Elements("PowerBuilderRunTime")
.Where(r => (int) r.Element("Version") == pbVersion)
.Single();
var fileList = runtime.Element("Files")
.Elements("File")
.Select(x => x.Value)
.ToList();
That will validate that there's exactly one matching runtime.
The problem is, there's only one element in your XML, with multiple children. You foreach loop only executes once, for the single element, not for its children.
Do something like this:
var fileSet = files.Elements("File");
foreach (var file in fileSet) {
fileList.Add(file.Value);
}
which loops over all children elements.
I always preferred using readers for reading homegrown XML config files. If you're only doing this once it's probably over kill, but readers are faster and cheaper.
public static class PowerBuilderConfigParser
{
public static IList<PowerBuilderConfig> ReadConfigFile(String path)
{
IList<PowerBuilderConfig> configs = new List<PowerBuilderConfig>();
using (FileStream stream = new FileStream(path, FileMode.Open))
{
XmlReader reader = XmlReader.Create(stream);
reader.ReadToDescendant("PowerBuilderRunTime");
do
{
PowerBuilderConfig config = new PowerBuilderConfig();
ReadVersionNumber(config, reader);
ReadFiles(config, reader);
configs.Add(config);
reader.ReadToNextSibling("PowerBuilderRunTime");
} while (reader.ReadToNextSibling("PowerBuilderRunTime"));
}
return configs;
}
private static void ReadVersionNumber(PowerBuilderConfig config, XmlReader reader)
{
reader.ReadToDescendant("Version");
string version = reader.ReadString();
Int32 versionNumber;
if (Int32.TryParse(version, out versionNumber))
{
config.Version = versionNumber;
}
}
private static void ReadFiles(PowerBuilderConfig config, XmlReader reader)
{
reader.ReadToNextSibling("Files");
reader.ReadToDescendant("File");
do
{
string file = reader.ReadString();
if (!string.IsNullOrEmpty(file))
{
config.AddConfigFile(file);
}
} while (reader.ReadToNextSibling("File"));
}
}
public class PowerBuilderConfig
{
private Int32 _version;
private readonly IList<String> _files;
public PowerBuilderConfig()
{
_files = new List<string>();
}
public Int32 Version
{
get { return _version; }
set { _version = value; }
}
public ReadOnlyCollection<String> Files
{
get { return new ReadOnlyCollection<String>(_files); }
}
public void AddConfigFile(String fileName)
{
_files.Add(fileName);
}
}
Another way is to use a XmlSerializer.
[Serializable]
[XmlRoot]
public class PowerBuilderRunTime
{
[XmlElement]
public string Version {get;set;}
[XmlArrayItem("File")]
public string[] Files {get;set;}
public static PowerBuilderRunTime[] Load(string fileName)
{
PowerBuilderRunTime[] runtimes;
using (var fs = new FileStream(fileName, FileMode.Open, FileAccess.Read))
{
var reader = new XmlTextReader(fs);
runtimes = (PowerBuilderRunTime[])new XmlSerializer(typeof(PowerBuilderRunTime[])).Deserialize(reader);
}
return runtimes;
}
}
You can get all the runtimes strongly typed, and use each PowerBuilderRunTime's Files property to loop through all the string file names.
var runtimes = PowerBuilderRunTime.Load(string.Format("{0}\\{1}", configPath, Resource.PBRuntimes));
You should try replacing this stuff with a simple XPath query.
string configPath;
System.Xml.XPath.XPathDocument xpd = new System.Xml.XPath.XPathDocument(cofigPath);
System.Xml.XPath.XPathNavigator xpn = xpd.CreateNavigator();
System.Xml.XPath.XPathExpression exp = xpn.Compile(#"/PowerBuilderRunTimes/PwerBuilderRunTime/Files//File");
System.Xml.XPath.XPathNodeIterator iterator = xpn.Select(exp);
while (iterator.MoveNext())
{
System.Xml.XPath.XPathNavigator nav2 = iterator.Current.Clone();
//access value with nav2.value
}
I started to use Json.NET to convert a string in JSON format to object or viceversa. I am not sure in the Json.NET framework, is it possible to convert a string in JSON to XML format and viceversa?
Yes. Using the JsonConvert class which contains helper methods for this precise purpose:
// To convert an XML node contained in string xml into a JSON string
XmlDocument doc = new XmlDocument();
doc.LoadXml(xml);
string jsonText = JsonConvert.SerializeXmlNode(doc);
// To convert JSON text contained in string json into an XML node
XmlDocument doc = JsonConvert.DeserializeXmlNode(json);
Documentation here: Converting between JSON and XML with Json.NET
Yes, you can do it (I do) but Be aware of some paradoxes when converting, and handle appropriately. You cannot automatically conform to all interface possibilities, and there is limited built-in support in controlling the conversion- many JSON structures and values cannot automatically be converted both ways. Keep in mind I am using the default settings with Newtonsoft JSON library and MS XML library, so your mileage may vary:
XML -> JSON
All data becomes string data (for example you will always get "false" not false or "0" not 0) Obviously JavaScript treats these differently in certain cases.
Children elements can become nested-object {} OR nested-array [ {} {} ...] depending if there is only one or more than one XML child-element. You would consume these two differently in JavaScript, etc. Different examples of XML conforming to the same schema can produce actually different JSON structures this way. You can add the attribute json:Array='true' to your element to workaround this in some (but not necessarily all) cases.
Your XML must be fairly well-formed, I have noticed it doesn't need to perfectly conform to W3C standard, but 1. you must have a root element and 2. you cannot start element names with numbers are two of the enforced XML standards I have found when using Newtonsoft and MS libraries.
In older versions, Blank elements do not convert to JSON. They are ignored. A blank element does not become "element":null
A new update changes how null can be handled (Thanks to Jon Story for pointing it out): https://www.newtonsoft.com/json/help/html/T_Newtonsoft_Json_NullValueHandling.htm
JSON -> XML
You need a top level object that will convert to a root XML element or the parser will fail.
Your object names cannot start with a number, as they cannot be converted to elements (XML is technically even more strict than this) but I can 'get away' with breaking some of the other element naming rules.
Please feel free to mention any other issues you have noticed, I have developed my own custom routines for preparing and cleaning the strings as I convert back and forth. Your situation may or may not call for prep/cleanup. As StaxMan mentions, your situation may actually require that you convert between objects...this could entail appropriate interfaces and a bunch of case statements/etc to handle the caveats I mention above.
You can do these conversions also with the .NET Framework:
JSON to XML: by using System.Runtime.Serialization.Json
var xml = XDocument.Load(JsonReaderWriterFactory.CreateJsonReader(
Encoding.ASCII.GetBytes(jsonString), new XmlDictionaryReaderQuotas()));
XML to JSON: by using System.Web.Script.Serialization
var json = new JavaScriptSerializer().Serialize(GetXmlData(XElement.Parse(xmlString)));
private static Dictionary<string, object> GetXmlData(XElement xml)
{
var attr = xml.Attributes().ToDictionary(d => d.Name.LocalName, d => (object)d.Value);
if (xml.HasElements) attr.Add("_value", xml.Elements().Select(e => GetXmlData(e)));
else if (!xml.IsEmpty) attr.Add("_value", xml.Value);
return new Dictionary<string, object> { { xml.Name.LocalName, attr } };
}
I'm not sure there is point in such conversion (yes, many do it, but mostly to force a square peg through round hole) -- there is structural impedance mismatch, and conversion is lossy. So I would recommend against such format-to-format transformations.
But if you do it, first convert from json to object, then from object to xml (and vice versa for reverse direction). Doing direct transformation leads to ugly output, loss of information, or possibly both.
Thanks for David Brown's answer. In my case of JSON.Net 3.5, the convert methods are under the JsonConvert static class:
XmlNode myXmlNode = JsonConvert.DeserializeXmlNode(myJsonString); // is node not note
// or .DeserilizeXmlNode(myJsonString, "root"); // if myJsonString does not have a root
string jsonString = JsonConvert.SerializeXmlNode(myXmlNode);
I searched for a long time to find alternative code to the accepted solution in the hopes of not using an external assembly/project. I came up with the following thanks to the source code of the DynamicJson project:
public XmlDocument JsonToXML(string json)
{
XmlDocument doc = new XmlDocument();
using (var reader = JsonReaderWriterFactory.CreateJsonReader(Encoding.UTF8.GetBytes(json), XmlDictionaryReaderQuotas.Max))
{
XElement xml = XElement.Load(reader);
doc.LoadXml(xml.ToString());
}
return doc;
}
Note: I wanted an XmlDocument rather than an XElement for xPath purposes.
Also, this code obviously only goes from JSON to XML, there are various ways to do the opposite.
Here is the full c# code to convert xml to json
public static class JSon
{
public static string XmlToJSON(string xml)
{
XmlDocument doc = new XmlDocument();
doc.LoadXml(xml);
return XmlToJSON(doc);
}
public static string XmlToJSON(XmlDocument xmlDoc)
{
StringBuilder sbJSON = new StringBuilder();
sbJSON.Append("{ ");
XmlToJSONnode(sbJSON, xmlDoc.DocumentElement, true);
sbJSON.Append("}");
return sbJSON.ToString();
}
// XmlToJSONnode: Output an XmlElement, possibly as part of a higher array
private static void XmlToJSONnode(StringBuilder sbJSON, XmlElement node, bool showNodeName)
{
if (showNodeName)
sbJSON.Append("\"" + SafeJSON(node.Name) + "\": ");
sbJSON.Append("{");
// Build a sorted list of key-value pairs
// where key is case-sensitive nodeName
// value is an ArrayList of string or XmlElement
// so that we know whether the nodeName is an array or not.
SortedList<string, object> childNodeNames = new SortedList<string, object>();
// Add in all node attributes
if (node.Attributes != null)
foreach (XmlAttribute attr in node.Attributes)
StoreChildNode(childNodeNames, attr.Name, attr.InnerText);
// Add in all nodes
foreach (XmlNode cnode in node.ChildNodes)
{
if (cnode is XmlText)
StoreChildNode(childNodeNames, "value", cnode.InnerText);
else if (cnode is XmlElement)
StoreChildNode(childNodeNames, cnode.Name, cnode);
}
// Now output all stored info
foreach (string childname in childNodeNames.Keys)
{
List<object> alChild = (List<object>)childNodeNames[childname];
if (alChild.Count == 1)
OutputNode(childname, alChild[0], sbJSON, true);
else
{
sbJSON.Append(" \"" + SafeJSON(childname) + "\": [ ");
foreach (object Child in alChild)
OutputNode(childname, Child, sbJSON, false);
sbJSON.Remove(sbJSON.Length - 2, 2);
sbJSON.Append(" ], ");
}
}
sbJSON.Remove(sbJSON.Length - 2, 2);
sbJSON.Append(" }");
}
// StoreChildNode: Store data associated with each nodeName
// so that we know whether the nodeName is an array or not.
private static void StoreChildNode(SortedList<string, object> childNodeNames, string nodeName, object nodeValue)
{
// Pre-process contraction of XmlElement-s
if (nodeValue is XmlElement)
{
// Convert <aa></aa> into "aa":null
// <aa>xx</aa> into "aa":"xx"
XmlNode cnode = (XmlNode)nodeValue;
if (cnode.Attributes.Count == 0)
{
XmlNodeList children = cnode.ChildNodes;
if (children.Count == 0)
nodeValue = null;
else if (children.Count == 1 && (children[0] is XmlText))
nodeValue = ((XmlText)(children[0])).InnerText;
}
}
// Add nodeValue to ArrayList associated with each nodeName
// If nodeName doesn't exist then add it
List<object> ValuesAL;
if (childNodeNames.ContainsKey(nodeName))
{
ValuesAL = (List<object>)childNodeNames[nodeName];
}
else
{
ValuesAL = new List<object>();
childNodeNames[nodeName] = ValuesAL;
}
ValuesAL.Add(nodeValue);
}
private static void OutputNode(string childname, object alChild, StringBuilder sbJSON, bool showNodeName)
{
if (alChild == null)
{
if (showNodeName)
sbJSON.Append("\"" + SafeJSON(childname) + "\": ");
sbJSON.Append("null");
}
else if (alChild is string)
{
if (showNodeName)
sbJSON.Append("\"" + SafeJSON(childname) + "\": ");
string sChild = (string)alChild;
sChild = sChild.Trim();
sbJSON.Append("\"" + SafeJSON(sChild) + "\"");
}
else
XmlToJSONnode(sbJSON, (XmlElement)alChild, showNodeName);
sbJSON.Append(", ");
}
// Make a string safe for JSON
private static string SafeJSON(string sIn)
{
StringBuilder sbOut = new StringBuilder(sIn.Length);
foreach (char ch in sIn)
{
if (Char.IsControl(ch) || ch == '\'')
{
int ich = (int)ch;
sbOut.Append(#"\u" + ich.ToString("x4"));
continue;
}
else if (ch == '\"' || ch == '\\' || ch == '/')
{
sbOut.Append('\\');
}
sbOut.Append(ch);
}
return sbOut.ToString();
}
}
To convert a given XML string to JSON, simply call XmlToJSON() function as below.
string xml = "<menu id=\"file\" value=\"File\"> " +
"<popup>" +
"<menuitem value=\"New\" onclick=\"CreateNewDoc()\" />" +
"<menuitem value=\"Open\" onclick=\"OpenDoc()\" />" +
"<menuitem value=\"Close\" onclick=\"CloseDoc()\" />" +
"</popup>" +
"</menu>";
string json = JSON.XmlToJSON(xml);
// json = { "menu": {"id": "file", "popup": { "menuitem": [ {"onclick": "CreateNewDoc()", "value": "New" }, {"onclick": "OpenDoc()", "value": "Open" }, {"onclick": "CloseDoc()", "value": "Close" } ] }, "value": "File" }}
For convert JSON string to XML try this:
public string JsonToXML(string json)
{
XDocument xmlDoc = new XDocument(new XDeclaration("1.0", "utf-8", ""));
XElement root = new XElement("Root");
root.Name = "Result";
var dataTable = JsonConvert.DeserializeObject<DataTable>(json);
root.Add(
from row in dataTable.AsEnumerable()
select new XElement("Record",
from column in dataTable.Columns.Cast<DataColumn>()
select new XElement(column.ColumnName, row[column])
)
);
xmlDoc.Add(root);
return xmlDoc.ToString();
}
For convert XML to JSON try this:
public string XmlToJson(string xml)
{
XmlDocument doc = new XmlDocument();
doc.LoadXml(xml);
string jsonText = JsonConvert.SerializeXmlNode(doc);
return jsonText;
}
Here is a simple snippet that converts a XmlNode (recursively) into a hashtable, and groups multiple instances of the same child into an array (as an ArrayList).
The Hashtable is usually accepted to convert into JSON by most of the JSON libraries.
protected object convert(XmlNode root){
Hashtable obj = new Hashtable();
for(int i=0,n=root.ChildNodes.Count;i<n;i++){
object result = null;
XmlNode current = root.ChildNodes.Item(i);
if(current.NodeType != XmlNodeType.Text)
result = convert(current);
else{
int resultInt;
double resultFloat;
bool resultBoolean;
if(Int32.TryParse(current.Value, out resultInt)) return resultInt;
if(Double.TryParse(current.Value, out resultFloat)) return resultFloat;
if(Boolean.TryParse(current.Value, out resultBoolean)) return resultBoolean;
return current.Value;
}
if(obj[current.Name] == null)
obj[current.Name] = result;
else if(obj[current.Name].GetType().Equals(typeof(ArrayList)))
((ArrayList)obj[current.Name]).Add(result);
else{
ArrayList collision = new ArrayList();
collision.Add(obj[current.Name]);
collision.Add(result);
obj[current.Name] = collision;
}
}
return obj;
}
Try this function. I just wrote it and haven't had much of a chance to test it, but my preliminary tests are promising.
public static XmlDocument JsonToXml(string json)
{
XmlNode newNode = null;
XmlNode appendToNode = null;
XmlDocument returnXmlDoc = new XmlDocument();
returnXmlDoc.LoadXml("<Document />");
XmlNode rootNode = returnXmlDoc.SelectSingleNode("Document");
appendToNode = rootNode;
string[] arrElementData;
string[] arrElements = json.Split('\r');
foreach (string element in arrElements)
{
string processElement = element.Replace("\r", "").Replace("\n", "").Replace("\t", "").Trim();
if ((processElement.IndexOf("}") > -1 || processElement.IndexOf("]") > -1) && appendToNode != rootNode)
{
appendToNode = appendToNode.ParentNode;
}
else if (processElement.IndexOf("[") > -1)
{
processElement = processElement.Replace(":", "").Replace("[", "").Replace("\"", "").Trim();
newNode = returnXmlDoc.CreateElement(processElement);
appendToNode.AppendChild(newNode);
appendToNode = newNode;
}
else if (processElement.IndexOf("{") > -1 && processElement.IndexOf(":") > -1)
{
processElement = processElement.Replace(":", "").Replace("{", "").Replace("\"", "").Trim();
newNode = returnXmlDoc.CreateElement(processElement);
appendToNode.AppendChild(newNode);
appendToNode = newNode;
}
else
{
if (processElement.IndexOf(":") > -1)
{
arrElementData = processElement.Replace(": \"", ":").Replace("\",", "").Replace("\"", "").Split(':');
newNode = returnXmlDoc.CreateElement(arrElementData[0]);
for (int i = 1; i < arrElementData.Length; i++)
{
newNode.InnerText += arrElementData[i];
}
appendToNode.AppendChild(newNode);
}
}
}
return returnXmlDoc;
}
I did like David Brown said but I got the following exception.
$exception {"There are multiple root elements. Line , position ."} System.Xml.XmlException
One solution would be to modify the XML file with a root element but that is not always necessary and for an XML stream it might not be possible either. My solution below:
var path = Path.GetFullPath(Path.Combine(Environment.CurrentDirectory, #"..\..\App_Data"));
var directoryInfo = new DirectoryInfo(path);
var fileInfos = directoryInfo.GetFiles("*.xml");
foreach (var fileInfo in fileInfos)
{
XmlDocument doc = new XmlDocument();
XmlReaderSettings settings = new XmlReaderSettings();
settings.ConformanceLevel = ConformanceLevel.Fragment;
using (XmlReader reader = XmlReader.Create(fileInfo.FullName, settings))
{
while (reader.Read())
{
if (reader.NodeType == XmlNodeType.Element)
{
var node = doc.ReadNode(reader);
string json = JsonConvert.SerializeXmlNode(node);
}
}
}
}
Example XML that generates the error:
<parent>
<child>
Text
</child>
</parent>
<parent>
<child>
<grandchild>
Text
</grandchild>
<grandchild>
Text
</grandchild>
</child>
<child>
Text
</child>
</parent>
I have used the below methods to convert the JSON to XML
List <Item> items;
public void LoadJsonAndReadToXML() {
using(StreamReader r = new StreamReader(# "E:\Json\overiddenhotelranks.json")) {
string json = r.ReadToEnd();
items = JsonConvert.DeserializeObject <List<Item>> (json);
ReadToXML();
}
}
And
public void ReadToXML() {
try {
var xEle = new XElement("Items",
from item in items select new XElement("Item",
new XElement("mhid", item.mhid),
new XElement("hotelName", item.hotelName),
new XElement("destination", item.destination),
new XElement("destinationID", item.destinationID),
new XElement("rank", item.rank),
new XElement("toDisplayOnFod", item.toDisplayOnFod),
new XElement("comment", item.comment),
new XElement("Destinationcode", item.Destinationcode),
new XElement("LoadDate", item.LoadDate)
));
xEle.Save("E:\\employees.xml");
Console.WriteLine("Converted to XML");
} catch (Exception ex) {
Console.WriteLine(ex.Message);
}
Console.ReadLine();
}
I have used the class named Item to represent the elements
public class Item {
public int mhid { get; set; }
public string hotelName { get; set; }
public string destination { get; set; }
public int destinationID { get; set; }
public int rank { get; set; }
public int toDisplayOnFod { get; set; }
public string comment { get; set; }
public string Destinationcode { get; set; }
public string LoadDate { get; set; }
}
It works....
Cinchoo ETL - an open source library available to do the conversion of Xml to JSON easily with few lines of code
Xml -> JSON:
using (var p = new ChoXmlReader("sample.xml"))
{
using (var w = new ChoJSONWriter("sample.json"))
{
w.Write(p);
}
}
JSON -> Xml:
using (var p = new ChoJsonReader("sample.json"))
{
using (var w = new ChoXmlWriter("sample.xml"))
{
w.Write(p);
}
}
Sample fiddle: https://dotnetfiddle.net/enUJKu
Checkout CodeProject articles for some additional help.
Disclaimer: I'm the author of this library.
Here's an example of how to convert JSON to XML using .NET built-in libraries (instead of 3rd party libraries like Newtonsoft).
using System.Text.Json;
using System.Text.Json.Nodes;
using System.Xml.Linq;
XDocument xmlDoc = jsonToXml(jsonObj);
private XDocument jsonToXml(JsonObject obj)
{
var xmlDoc = new XDocument();
var root = new XElement("Root");
xmlDoc.Add(root);
foreach (var prop in obj)
{
var xElement = new XElement(prop.Key);
xElement.Value = prop.Value.ToString();
root.Add(xElement);
}
return xmlDoc;
}